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Finding the Fourth Proportional to 302,139.90, 453,537.90 and 189,946.80

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Solution

The fourth proportional to 302,139.90, 453,537.90 and 189,946.80 is: 285,126.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,139.90 : 453,537.90 = 189,946.80 : x
  2. Step 2: Convert to fraction form
    302,139.90/453,537.90 = 189,946.80/x
  3. Step 3: Cross multiply
    302,139.90x = 453,537.90 × 189,946.80
  4. Step 4: Simplify right side
    302,139.90x = 86,148,072,783.72
  5. Step 5: Solve for x
    x = 86,148,072,783.72/302,139.90
  6. Step 6: Final answer
    x = 285,126.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.